Patents by Inventor Paul Mitcheson

Paul Mitcheson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10843024
    Abstract: A system for synthesising inertia in exercise equipment, the exercise equipment comprising a rotatable member to which a user applies a user torque in use, the system comprising: an electric drive system comprising an electric motor operably connected to the rotatable member, the electric motor configured to impart a resistance torque, in use, on the rotatable member of the exercise equipment, whereby the resistance torque opposes the user torque; at least one sensor for monitoring a user input to the rotatable member; and a control system, comprising at least a processor and a memory, wherein the control system is connected to the at least one sensor and is configured to use the input from the at least one sensor and at least one predetermined parameter storable in the memory, to determine a resistance torque and to provide instructions to the electric drive mechanism to impart said resistance torque on said rotatable member.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: November 24, 2020
    Assignee: Muoverti Limited
    Inventors: Alessandro Astolfi, Alex Caccia, Paul Mitcheson
  • Publication number: 20190288563
    Abstract: Disclosed herein is a rectifier circuit for receiving an AC signal from a receiver coil in an inductive power transfer system. The circuit is configured to operate at an operating frequency. The circuit comprises a Class-E rectifier; an AC signal supplier configured to supply an AC signal to the rectifier circuit; and a resonant network having an inductor and a capacitor. The resonant network has a resonant frequency, and the ratio of the resonant frequency to the operating frequency is within the range of 1.75 to 3.
    Type: Application
    Filed: November 29, 2017
    Publication date: September 19, 2019
    Applicant: IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDICINE
    Inventors: David YATES, George KKELIS, Paul MITCHESON, Samer ALDHAHER
  • Patent number: 10170940
    Abstract: A load-independent Class EF inverter may maintain ZVS operation, and produce a constant output current, rather than a constant output voltage, regardless of the load resistance. A constant output current allows the inverter to operate efficiently for a load range from zero resistance (short circuit) to a certain maximum load resistance, making the inverter more suitable as a coil driver for an IPT system. The resonant frequency of the resonant circuit may be tuned to a non-integer multiple of a switching frequency.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: January 1, 2019
    Assignee: Imperial Innovations Limited
    Inventors: Paul Mitcheson, David Yates, Samer Aldhaher
  • Publication number: 20180085615
    Abstract: A system for synthesising inertia in exercise equipment, the exercise equipment comprising a rotatable member to which a user applies a user torque in use, the system comprising: an electric drive system comprising an electric motor operably connected to the rotatable member, the electric motor configured to impart a resistance torque, in use, on the rotatable member of the exercise equipment, whereby the resistance torque opposes the user torque; at least one sensor for monitoring a user input to the rotatable member; and a control system, comprising at least a processor and a memory, wherein the control system is connected to the at least one sensor and is configured to use the input from the at least one sensor and at least one predetermined parameter storable in the memory, to determine a resistance torque and to provide instructions to the electric drive mechanism to impart said resistance torque on said rotatable member.
    Type: Application
    Filed: April 22, 2016
    Publication date: March 29, 2018
    Inventors: Alessandro Astolfi, Alex Caccia, Paul Mitcheson
  • Patent number: 9899877
    Abstract: An inductive power transfer system comprises a transmitter circuit comprising a transmitter coil and a receiver circuit comprising a receiver coil spaced from the transmitter coil. The transmitter circuit is in the form of a Class E amplifier with a first inductor and a transistor in series between the terminals of a power supply. A first transmitter capacitance is in parallel with the transistor between the first inductor and a power supply terminal, a primary tank circuit in parallel with the first transmitter capacitance, the primary tank circuit comprising the transmitter coil and a second transmitter capacitance arranged in parallel with the transmitter coil, and a third transmitter capacitance in series with the first inductor between the first transmitter capacitance and the primary tank circuit. The second transmitter capacitance is selected such that a resonant frequency of the primary tank circuit is not equal to the first frequency.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: February 20, 2018
    Assignee: Drayson Technologies (Europe) Limited
    Inventors: Paul Mitcheson, Stepan Lucyszyn, Manuel Pinuela Rangel, David Yates
  • Publication number: 20170324277
    Abstract: A load-independent Class EF inverter may maintain ZVS operation, and produce a constant output current, rather than a constant output voltage, regardless of the load resistance. A constant output current allows the inverter to operate efficiently for a load range from zero resistance (short circuit) to a certain maximum load resistance, making the inverter more suitable as a coil driver for an IPT system. The resonant frequency of the resonant circuit may be tuned to a non-integer multiple of a switching frequency.
    Type: Application
    Filed: May 4, 2016
    Publication date: November 9, 2017
    Inventors: Paul Mitcheson, David Yates, Samer Aldhaher
  • Publication number: 20170302086
    Abstract: There is provided a near-field inductive power transfer system (10), comprising a power transmission device (100) arranged to transmit power wirelessly at a first frequency, f0, and a power reception device (200) arranged to receive power transmitted by the power transmission device (100). The power reception device (200) is moveable relative to the power transmission device (100) and comprises a receiver circuit (210) configured to receive power for powering a variable load (230) when the power reception device (200) is in a near-field region of the power transmission device (100), the receiver circuit being a resonant circuit with a resonant frequency, fR, such that 0.2<f0/fR<3.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 19, 2017
    Inventors: Christopher Howe Kwan, Manuel Pinuela Rangel, Paul Mitcheson, David Yates
  • Publication number: 20150207334
    Abstract: An inductive power transfer system comprises a transmitter coil TX and a receiver coil RX spaced from the transmitter coil. A transmitter circuit comprises the transmitter coil and is in the form of a Class E amplifier with a first inductor Uchoke and a transistor in series between the terminals of a power supply, a first transmitter capacitor Cpar in parallel with the transistor between the first inductor and a power supply terminal, a primary tank circuit in parallel with the first transmitter capacitor, the primary tank circuit comprising the transmitter coil and a second transmitter capacitor Cres arranged in parallel with the transmitter coil, and a third transmitter capacitor Cser in series with the first inductor between the first transmitter capacitor and the primary tank circuit.
    Type: Application
    Filed: May 31, 2013
    Publication date: July 23, 2015
    Applicant: Drayson Wireless Limited
    Inventors: Paul Mitcheson, Stepan Lucyszyn, Manuel Pinuela Rangel, David Yates
  • Publication number: 20130229156
    Abstract: A method for monitoring the condition of at least one cell of a battery, used in an electric or hybrid electric vehicle. The battery is connected to a power converter to supply electrical power to an electrical load. The method includes the steps of: controlling the power converter to vary the input impedance of the power converter to draw a varying current from the cell; sensing the voltage across the cell and the current drawn in response to varying the impedance of the power converter; calculating from the sensed voltage and current the complex impedance of the cell; and comparing the calculated complex impedance with information indicative of a correlation between (i) the complex impedance and (ii) information indicative of the condition of the cell, to give an indication of the condition of the cell. The varying current may be actively varied or passively varied.
    Type: Application
    Filed: July 26, 2011
    Publication date: September 5, 2013
    Applicant: IMPERIAL INNOVATIONS LIMITED
    Inventors: Nigel Brandon, Paul Mitcheson, Vladimir Yufit, David Howey, Gregory Offer